Ax.



Patented July 24, I900.

8. T. JOHNSON.

(Application fi1e:d Oct. 4, 1899.)

(No Model.)

I W/TNE SSE S (NVENTOR dim AJTOHNEYS V the same on the line 3 3 in Fig. 1.

- rrnb STATES" PATENT rrrcn.

SIEVE THEODORE JOHNSON, OF TRINIDAD, CALIFORNIA;

srnoirrcn'rrorr forming part of Letters i'atent No. 654,349, time July 24, 1966. Application filed October 4, 1899. Serial No. 732,496. (No model.)

To 00% whom, it may cmecer'n: s 1

Beit known that I, SIEvn THEODORE J OLlN SON, of Trinidad, in the county of Humboldt and State of California, have invented certain new and useful Improvements in Axes, of which the followingis a full, clear, and exact description.

The object of the invention is to provide certain new and useful improvem'entsin axes whereby the cutting-blade can be readily at tached to or removed from the head to perunit of using different forms of cutting-blades on said head and to permit of conveniently and quickly removing a worn-out or dull c'utting-blade and replacing it by a new one.

The invention consists of novel features and parts and combinations of the same, as will be fully described hereinafter and then pointed out in the claim.

A practical embodiment of my invention is represented in the accompanying drawings, forming apartof this specification, in which characters of reference indicate corresponding parts in all the views.

Figure 1 is a side elevation of the improvement as applied to a two-bit ax. Fig. 2 is a transverse section of the same on the line 2 2 in Fig. 1. Fig. 3 is a sectional plan view of Fig. 4 is a side elevation of, one of the cutting-blades, and Fig. 5 is a side elevation of a modified form of the improvement.

The improved ax shown in Figs. 1, 2, 3, and 4 is provided with a head A, having the usual eye for receiving the end of a handle B, and said head carries on opposite sides cuttingblades 0 0, each having a V-shaped tongueand-groove joint or connection with the head A, said joint extending along inwardly-inclined straight lines D, terminating at the outer ends of a U-shaped line D, as will be readily understood by reference to Fig. 1.

In order to fasten the cutting-blade O to the corresponding end of the head A, I provide transverse pins E, passing through the members of the joint along the lines D D to prevent displacement or disconnection of the blade 0 from the head A. For very heavy cuttingblades, such as indicated by the blade 0, I provide transverse keys F, passing through the members of the joint and secured are prevented from moving in a longitudinal direction owing to the peculiar form of the joint and are not liable to move transversely owing to the V-shaped form of the tongueand-groove members of the joint, and by having the keys and pins, or either of them, the

blades are prevented from moving in an out Ward direction from the head A.

In the modified form shown in Fig. 5 the shape of the joint is reversed-that is,the lines D are inclined inwardly and outwardly, the U-shaped lines D likewise extending outward instead of inward, as indicated in Fig. 1. Otherwise the construction is the samethat is, the blades 0 O are connected with the head A by a joint made by \l-shaped tongues and grooves, and pins E are employed for locking the keys F in place, and additional pins E are employed for fastening the members of the joint together, the same as above described relatively to the blade C. The blade 0 has the members of its joint fastened together by transverse pins E the same as the pins E indicated as fastening the blade 0. (Shown in Fig. 1.)

From the foregoing it is evident that by removing the-pins or keys, or both, the cuttingblade 0, 0, 0 or C can be readily removed from the head A, and another differently shaped or sharpened blade may be put in position on the head and secured in place thereon by reinserting the pins or keys, so that the ax can be used by the operator the same as before. .Thus differently-shaped blades can be used on the same ax and a dull blade can be readily removed at any time and replaced by a sharp one. Furthermore, the same head and handle can be used for a considerable length of time, blades being inserted therein from time to time and replaced by new ones in case they become worn out, broken, or dulled.

edges of the V-shaped groove of the head and the blade at the divergent side portions of the blade-seat, and pins passing transversely between the edges of the blade and the said angular 'keys.

SIEVE THEODORE JOHNSON.

Witnesses:

M. T. BELL, O. A. MINER. 

